body,html
    line-height:1
    font-weight:200
    font-family:'PingFang SC','STHeitiSC-Light','Helvetica-Light',arial,sans,sans-serif

.clearfix
    display:inline-block
    &::after
        display:block
        content:'.'
        height:0
        line-height:0
        clear:both
        visibility:hidden


@media(-webkit-min-device-pixel-ratio:1.5),(min-device-pixel-ratio:1.5)
    .border-1px
        &::after
            -webkit-transform:scaleY(0.7)
            transform:scaleY(0.7)


@media(-webkit-min-device-pixel-ratio:2),(min-device-pixel-ratio:2)
    .border-1px
        &::after
            -webkit-transform:scaleY(0.5)
            transform:scaleY(0.5)